Coal mining for Kids - Kiddle

Hard-Rock Underground Mining - How Underground Mining Works ...

There are hard-rock underground mines, and there are soft-rock underground mines. Coal deposits, for instance, live in relatively soft sedimentary rock. Gold deposits live in igneous or metamorphic rock, which is relatively hard, as do diamonds, copper, silver, nickel and zinc [source: Great Mining ...

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Hardrock Mining Techniques|Underground Mines|Minings Method

Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals such as those containing metals like gold, copper, zinc, nickel and lead or gems such as diamonds.

Hard Rock Miner's Handbook

Hard Rock Mining - APAC

Hard Rock Solutions. Minova is a leading manufacturer of products used in underground hard rock mines. From production of gold, copper and platinum to diamonds and other precious stones, our products are designed to create safe and productive mine environments.